M3.3 Earthquake 93 km NNW of Atka, Alaska — March 18, 2024
2024-03-18 11:35:06 UTC (2024-03-18) · approx. 11:35 PM UTC-12 local
On March 18, 2024 at 11:35 UTC, a magnitude 3.3 shallow crustal earthquake struck 93 km NNW of Atka, Alaska, at a depth of 8.5 km and coordinates 52.9981°, -174.5905°.
Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 114 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-174.5905°E
Technical Information
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Common Questions
How strong was the magnitude 3.3 earthquake near Atka, Alaska?
The magnitude 3.3 earthquake that struck 93 km NNW of Atka, Alaska on March 18, 2024 at 11:35 UTC had a depth of 8.5 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000mkhi). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, March 18, 2024). M3.3 Earthquake 93 km NNW of Atka, Alaska — March 18, 2024. Retrieved May 27, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000mkhi/